与电源相连接的固定触点就是静触头;与负荷(负载)相连接的可以活动(断开)的触点就是动触头 如 闸刀开关,上方是静触头,活动的闸刀是动触头 file:///C:/Documents%20and%20Settings/Administrator/Local%20Settings/Application%20Data/YNote/data/qq271B948BF870C85862050BB8E602562D/be5e7fef4e95455dbce89af9f971d127/80%25e5%2585%25b3.jpeg
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